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Marcos C.
@kr0yss
Mobile app developer, Published on App Store and Google Play
Kolumbien
Spanisch
Über mich
I'm a mobile app developer who ships. I've built and published apps live on both the App Store and Google Play — with real subscriptions, custom backends, push notifications, and AI features.
I don't just hand you code. I take your idea to a working app that's published, monetized, and ready for users.
Stack: React Native + Expo (iOS & Android), Node.js + PostgreSQL, RevenueCat subscriptions, push notifications, AI (GPT, voice), and Meta Ads to drive installs.
I speak Spanish and write English. Tell me your idea — I'll tell you honestly what it takes to ship it.
Kompetenzen
Marcos C.
offline •
Durchschnittliche Antwortzeit: 1 Stunde
Portfolio
Arbeitserfahrung
Independent Mobile App Developer
Self Employed • Freiberufler
Jan 2025 - Present • 1 yr 7 mos
Designed, built, and published mobile apps for iOS and Android using React Native and Expo. Shipped live apps to the App Store and Google Play with in-app subscriptions (RevenueCat), custom Node.js + PostgreSQL backends, push notifications, AI features (GPT, voice recognition), and biometric authentication. Handled the full cycle: development, store publishing, regional pricing, and Meta Ads campaigns.
Bewertungen als Käufer
V 
vaneloren
Kolumbien
Marcos es muy amable, concreto y sabe exactamente lo que pide, es muy fácil trabajar con gente así. Lo recomiendo.
Hilfreich?F 
francobenve1
Argentinien
ya tenemos varios trabajos juntos, siempre es muy claro con lo que necesita, un placer trabajar con el
Hilfreich?F francobenve1
Argentinien
excellent buyer, it is always good to work with him again
Hilfreich?F francobenve1
Argentinien
explicaron muy bien el proyecto, pudimos trabajar bien juntos!
Hilfreich?
